Hello, We have configure squid with yp_auth and we could successfully use yp_auth with our yp server. But we tested with passwd.byname. Now, user expiry date is in shadow file. We tried to use yp_auth nisdomain shadow.byname but it did not work. How to use shadow.byname ? This will help a lot for centralize authentication server and whenver user account expiry, user can not use internet facility. Regards Jigar